RAAL Requisite CA-1a
RAAL Requisite CA-1a
The more "normal" version of the SR-1b - looks almost like a normal headphone, but sounds anything like it. A must listen!
CA-1a True-Ribbon™
True-ribbon headphone system with TI-1b transformer interface
This system is built around a true ribbon driver and is designed to run with the TI-1b transformer box. The transformer interface allows connection to a compatible amplifier via a 4-pin balanced XLR headphone output.
Important: the raw driver has an extremely low impedance. With the transformer in the chain, the system operates at 16 or 32 ohms. The setup requires massive current; use extra caution with amplifiers whose outputs exceed 25 watts.
Technical Specifications
| Parameter | Specification |
| Physical Specifications | |
| Driver Type | Ribbon Driver |
| Driver Size | 8 cm long, full-spectrum driver |
| Design | Circumaural (around-the-ear) cups with interchangeable pads |
| Technical Specifications | |
| Impedance (Raw Driver) | Approximately 0.2 ohms (without transformer) |
| System Impedance (With Transformer) | 16 or 32 ohms |
| Amplifier Interface | Requires TI-1b transformer box |
| Power Requirements | Massive current required; caution if amp outputs > 25 watts |
| Compatible Output | 4-pin balanced XLR headphone amplifier |
| System Components | |
| Headphones | CA-1a True-Ribbon™ headphones |
| Transformer Interface | TI-1b transformer box (contains toroidal transformers) |
| SC2 Cable | Connects CA-1a headphones to the TI-1b interface |
| HPL Cable | Connects TI-1b to a 4-pin XLR headphone amplifier output |
